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unobserve()方法命令IntersectionObserver停止对一个元素的观察。语法
IntersectionObserver.unobserve(target);
参数
target- 要取消观察的目标，如果没有提供，方法不做任何事情，也不会抛出异常。
返回值
undefined.
例子
下面代码段展示了一个观察器被创建，一个元素被观察，以及取消观察的过程。
var observer = new IntersectionObserver(callback);
observer.observe(document.getElementById("elementToObserve"));
/* ... */
observer.unobserve(document.getElementById("elementToObserve"));
说明
| Specification | Status | Comment |
|---|---|---|
| Intersection Observer IntersectionObserver.unobserve() |
Working Draft | Initial definition. |
浏览器兼容性
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
| Feature | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|---|
| Basic support | 51 | 151 | 55 53 — 552 | No | ? | ? |
| Feature | Android webview | Chrome for Android | Edge mobile | Firefox for Android | Opera Android | iOS Safari | Samsung Internet |
|---|---|---|---|---|---|---|---|
| Basic support | 51 | 51 | Yes | ? | ? | ? | 5.0 |
1. Available since Windows Insider Preview Build 14986
2. From version 53 until version 55 (exclusive): this feature is behind the dom.IntersectionObserver.enabled preference (needs to be set to true). To change preferences in Firefox, visit about:config.